package com.atguigu.gulimallssoserver.controller;

import com.sun.deploy.net.HttpResponse;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.data.redis.core.RedisTemplate;
import org.springframework.stereotype.Controller;
import org.springframework.ui.Model;
import org.springframework.util.StringUtils;
import org.springframework.web.bind.annotation.*;

import javax.servlet.http.Cookie;
import javax.servlet.http.HttpServletResponse;
import java.util.UUID;

@Controller
public class LoginController {
    @Autowired
    RedisTemplate redisTemplate;
    @ResponseBody
    @GetMapping("/userinfo")
    public String userInfo(@RequestParam("token") String token){
        String s = (String) redisTemplate.opsForValue().get(token);
        return s;
    }

    @GetMapping("/login.html")
    public String loginPage(@RequestParam("redirect_url") String url,
                            Model model,
                            @CookieValue(value="sso_token",required =  false) String sso_token){
        if(!StringUtils.isEmpty(sso_token)){
            //说明之前有人登录过,浏览器留下痕迹
            return "redirect:"+url+"?token="+sso_token;
        }
        model.addAttribute("url",url);
        return "login";
    }
    @PostMapping("/doLogin")
    public String doLogin(@RequestParam("username") String username,
                          @RequestParam("password")String password,
                          @RequestParam("url")String url,
                          HttpServletResponse httpServletResponse){
        //登录成功跳转,条回到之前的页面
      if(!StringUtils.isEmpty(username) && !StringUtils.isEmpty(password)){
          //把登陆成功的用户存起来
          String uuid = UUID.randomUUID().toString().replace("-","");
          redisTemplate.opsForValue().set(uuid,username);
          Cookie sso_token = new Cookie("sso_token",uuid);
          httpServletResponse.addCookie(sso_token);
          return "redirect:"+url+"?token="+uuid;
      }else{
        return "login";
      }
      }
}
